CODEWITHSUNDEEP
javascriptdatetimeiso
Casey Flynn
Casey Flynn

Reputation: 14038

Initializing javascript Date with ISO 8601 date string produces date value -1 day

var date = new Date('2013-04-15');
console.log(date);

Outputs:

Sun Apr 14 2013 20:00:00 GMT-0400 (EDT)

Which is -1 Day, why does Date have this behavior?

Upvotes: 0

Views: 1215

Answers (3)

Steely Wing
Steely Wing

Reputation: 17597

Because new Date() is using UTC time, the toString() use your current timezone.

If you want to print the UTC time, you should use

var date = new Date('2013-04-15');
console.log(date.toUTCString());

Upvotes: 0

Eric
Eric

Reputation: 97571

These two timestamps represent the same time:

Sun Apr 14 2013 20:00:00 GMT-0400 (EDT)
Mon Apr 15 2013 00:00:00 UTC

You're getting the first, but expecting the second. The date constructor appears to take a time in UTC.

If you do:

var date = new Date('2013-04-15 EDT');
console.log(date);

Then you'll probably get the intended result

Edit: This behavior is bizarre. This code works as you intend it to:

var date = new Date('Apr 15 2013');
console.log(date);

Mon Apr 15 2013 00:00:00 GMT+XYZ

Upvotes: 2

James
James

Reputation: 13501

You need to specify the timezone to get the output you're looking for.

An example here: Javascript date object always one day off?

Upvotes: 1

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